The USPS Locatable Address Conversion System (LACS) allows you to correct addresses that have changed as a result of a rural route address converting to a street-style address, a PO Box renumbering, or a street-style address changing. Note that LACSLink is a CASS feature, not part of NCOALink. Address data in LACSLink does not contain names of individuals, families, or firms because it does not involve moves, only changes to an existing address. If you use external CASS, your CASS product will provide LACSLink processing.
Some examples of LACSLink conversions are shown below.
- Rural Route Converted to Street-Style Address: Old Address: RR 3 Box 45 New Address: 1292 North Ridgeland Drive
- Street Renamed and Renumbered: Old Address: 23 Main Street New Address: 45 West First Avenue
- PO Box Renumbered: Old Address: PO Box 453 New Address: PO Box 10435
To use LACSLink, follow these steps.